On the dynamical origin of the ICM metallicity evolution
We present a study on the origin of the metallicity evolution of the intra-cluster medium (ICM) by applying a semi-analytic model of galaxy formation to N-body/smoothed particle hydrodynamic (SPH) non-radiative numerical simulations of clusters of galaxies. The semi-analytic model includes gas cooli...
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/93806 https://academic.oup.com/mnras/article/386/1/96/977131 |
| Aporte de: |
| id |
I19-R120-10915-93806 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía Numerical methods Galaxies Cosmology X-ray galaxies Clusters of galaxies |
| spellingShingle |
Astronomía Numerical methods Galaxies Cosmology X-ray galaxies Clusters of galaxies Cora, Sofía Alejandra Tornatore, Luca Tozzi, Paolo Dolag, Klaus On the dynamical origin of the ICM metallicity evolution |
| topic_facet |
Astronomía Numerical methods Galaxies Cosmology X-ray galaxies Clusters of galaxies |
| description |
We present a study on the origin of the metallicity evolution of the intra-cluster medium (ICM) by applying a semi-analytic model of galaxy formation to N-body/smoothed particle hydrodynamic (SPH) non-radiative numerical simulations of clusters of galaxies. The semi-analytic model includes gas cooling, star formation, supernovae feedback and metal enrichment, and is linked to the diffuse gas of the underlying simulations so that the chemical properties of gas particles are dynamically and consistently generated from stars in the galaxies. This hybrid model lets us have information on the spatial distribution of metals in the ICM. The results obtained for a set of clusters with virial masses of ∼1.5 × 1015 h−1 M contribute to the theoretical interpretation of recent observational X-ray data, which indicate a decrease of the average iron content of the intra-cluster gas with increasing redshift. We find that this evolution arises mainly as a result of a progressive increase of the iron abundance within ∼0.15 Rvir. The clusters have been considerably enriched by z ∼ 1 with very low contribution from recent star formation. Low entropy gas that has been enriched at high redshift sinks to the cluster centre contributing to the evolution of the metallicity profiles. |
| format |
Articulo Articulo |
| author |
Cora, Sofía Alejandra Tornatore, Luca Tozzi, Paolo Dolag, Klaus |
| author_facet |
Cora, Sofía Alejandra Tornatore, Luca Tozzi, Paolo Dolag, Klaus |
| author_sort |
Cora, Sofía Alejandra |
| title |
On the dynamical origin of the ICM metallicity evolution |
| title_short |
On the dynamical origin of the ICM metallicity evolution |
| title_full |
On the dynamical origin of the ICM metallicity evolution |
| title_fullStr |
On the dynamical origin of the ICM metallicity evolution |
| title_full_unstemmed |
On the dynamical origin of the ICM metallicity evolution |
| title_sort |
on the dynamical origin of the icm metallicity evolution |
| publishDate |
2008 |
| url |
http://sedici.unlp.edu.ar/handle/10915/93806 https://academic.oup.com/mnras/article/386/1/96/977131 |
| work_keys_str_mv |
AT corasofiaalejandra onthedynamicaloriginoftheicmmetallicityevolution AT tornatoreluca onthedynamicaloriginoftheicmmetallicityevolution AT tozzipaolo onthedynamicaloriginoftheicmmetallicityevolution AT dolagklaus onthedynamicaloriginoftheicmmetallicityevolution |
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Repositorios |
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